diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index f503db2..b006a69 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -11,7 +11,7 @@ jobs:
     strategy:
       fail-fast: false  # don't cancel other matrix jobs when one fails
       matrix:
-        python-version: ["3.7", "3.8", "3.9", "3.10"]
+        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11"]
         os: [ubuntu-latest, macos-latest, windows-latest]
 
     runs-on: ${{ matrix.os }}
diff --git a/docs/source/whatsnew.md b/docs/source/whatsnew.md
index 6832a92..f8980d5 100644
--- a/docs/source/whatsnew.md
+++ b/docs/source/whatsnew.md
@@ -4,13 +4,15 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-
 ## [0.2.4] - TBD
 
 ### Changed
 - Removed Shapely instalation check and added specific import of the affinity module
   to avoid import errors when using Shapely 2.0 (see PR#40).
 
+### Testing
+- Add python 3.11 to test matrix (see PR#38).
+
 
 ## [0.2.3] - 2022-11-11
 It is now possible to export the unshaded area for further analysis. A GIF was added to the